<template>
	<el-image :src="`${realSrc}`" fit="cover" :style="`width:${realWidth};height:${realHeight};`" :preview-src-list="realSrcList">
		<div slot="error" class="image-slot">
			<i class="el-icon-picture-outline"></i>
		</div>
	</el-image>
</template>

<script>
import { isExternal } from '@/utils/validate';

export default {
	name: 'ImagePreview',
	props: {
		src: {
			type: String,
			default: '',
		},
		width: {
			type: [Number, String],
			default: '',
		},
		height: {
			type: [Number, String],
			default: '',
		},
	},
	computed: {
		realSrc() {
			if (!this.src) {
				return;
			}
			let real_src = this.src.split(',')[0];
			if (isExternal(real_src)) {
				return real_src;
			}
			return process.env.VUE_APP_BASE_API + real_src;
		},
		realSrcList() {
			if (!this.src) {
				return;
			}
			let real_src_list = this.src.split(',');
			let srcList = [];
			real_src_list.forEach((item) => {
				if (isExternal(item)) {
					return srcList.push(item);
				}
				return srcList.push(process.env.VUE_APP_BASE_API + item);
			});
			return srcList;
		},
		realWidth() {
			return typeof this.width == 'string' ? this.width : `${this.width}px`;
		},
		realHeight() {
			return typeof this.height == 'string' ? this.height : `${this.height}px`;
		},
	},
};
</script>

<style lang="scss" scoped>
.el-image {
	border-radius: 5px;
	background-color: #ebeef5;
	box-shadow: 0 0 5px 1px #ccc;
	::v-deep .el-image__inner {
		transition: all 0.3s;
		cursor: pointer;
		&:hover {
			transform: scale(1.2);
		}
	}
	::v-deep .image-slot {
		display: flex;
		justify-content: center;
		align-items: center;
		width: 100%;
		height: 100%;
		color: #909399;
		font-size: 30px;
	}
}
</style>
